diff --git a/README.md b/README.md
index cc03055..688abfd 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,13 @@ apptainer build --sandbox node/ apptainer.def
 apptainer run --writable node/ 
 ```
 
+An apptainer.def file can be built directly from the dockerfile as needed:
+
+```
+pip3 install spython
+spython recipe Dockerfile &> apptainer.def
+```
+
 ## API Docs
 
 See the [API documentation page](https://github.com/OpenDroneMap/NodeODM/blob/master/docs/index.adoc).